Baseboard radiator



March 29, 1960 s. PERSSON BASEBOARD RADIATOR 2 Sheets-Sheet 1 Filed Jan. 8, 1957 INVENTOR BY 4 "(I ATTORNEYS March 29, 1960 s. PERSSON BASEBOARD RADIATOR 2 Sheets-Sheet 2 Filed Jan. 8, 1957 INVENTOR SEIEFUS Pf/PS-SOM ATTORNEYS BASEBOARD RADIATOR Severus Persson, Toronto, Ontario, Canada, assignor to Aga Steel Radiators of Canada Ltd., Ajax, Ontario, Canada, a corporation of Ontario Application January 8, 1957, Serial No. 633,147 1 Claim. (Cl. 257-133) The present invention refers to a baseboard radiator, particularly one for hotwater heating systems.

The principal object of the invention is to provide a baseboard radiator having eflicient heat transfer properties from the heating medium, preferably hotwater, in the radiator to the air outside it.

Another object of the invention is to provide a baseboard radiator suitable for mass production.

Additional objects of the invention are to construct the radiator to have a pleasing appearance and so as to make at least the visible parts thereof easily cleanable.

The baseboard radiator according to the invention comprises a front plate with horizontal wave crests extending longitudinally over the entire length of the plate, a fiat rear plate, the said plates forming primary plates of the radiator and being welded together along their edges and in the wave troughs between the wave crests to form channels for the heating medium, an undulating secondary plate having wave troughs welded to the rear plate and having vertical wave crests forming together with the wave troughs air passages, and a substantially fiat screening plate arranged immediately rearwards of the secondary plate in a vertical position so as to form a wall for the said passages, the secondary plate with the primary plates joined thereto being detachably suspended to the said screening plate.

In order that the invention may be more clearly understood one particular embodiment therefore will be described, by way of example, with reference to the accompanying drawings wherein:

Fig. 1 shows a vertical cross section of a mounted baseboard radiator according to the invention,

Fig. 2 shows the radiator seen from above partly in horizontal section along the line the exclusion of the middle portion of the radiator,

Fig. 3 shows a horizontal section of an end part of the radiator with an end cover assembly, and

Fig. 4 shows on a reduced scale a perspective view of a portion of the baseboard radiator without the end cover assembly.

The radiator comprises a front plate consisting of wave crests 1 and troughs 2 which extend longitudinally along the entire horizontal length of the front plate. The wave crests 1 as well as the troughs 2 have flattened top and bottom portions, respectively, and the whole front plate 1, 2, which is preferably of comparatively thin steel sheet, is easily given the desired form in a simple rolling operation. The front plate 1, 2 is seam welded along its edges and spot welded at the troughs 2 to a fiat rear plate 3 so as to form channels 4 for a fiowing heating medium, such as hot water. At each vertical end of the radiator a bent portion of the rear plate 3 and an end plate 5 form a collecting chamber 6 communicating with the channels 4 and provided with tube fittings 7 and 8 at the lowermost part for connection to inlet and outlet tubes. Mentioned plates 5 could be replaced by further bent portions of the rear plate-3.

IIII of Fig. 1 with form of the wave 2 Thus, the plates 1, 2 and 3 may be said to form the primary plates of the radiator.

An undulating plate 9 is spot welded with its wave troughs to the rear plate 3. The wave crests of the plate 9 extend vertically and have a substantially larger height than the distance between the waves, for instance three times as large, so as to form at right angles to the rear plate comparatively deep passages which are open upwardly and downwardly to admit air. The wave troughs of the plate 9 have a relatively large contact area with the rear plate in order to facilitate the heat transfer. The plate 9 forms the secondary plate of the radiator.

To the tops of the wave crests of the plate 9 are attached horizontal supporting members 10 in the form of an inverted J or an inverted U having shanks of different length. The members 10 rest on and engage upwardly extending fiat bar projections 11 of a bracket 12. This bracket is also provided with similar extensions 13 extending downwardly and serving as abutments for the tops of the wave crests of the plate 9. The members 10 together with the plate 9 are consequently suspended horizontally slidable on the brackets 11-13.

The brackets 11 to 13 are welded to a substantially flat vertical screening plate 14 having a lower edge 15 extending somewhat below the primary and secondary plates of the radiator and a protruding portion 16 above the said primary and secondary plates and which is continued by a horizontal shelf 17.

The screening plate 14, Fig, 3, is continued at each of its vertical terminal edges by an extension plate 18 having an end wall 19, between which and the primary plate 1, 2 there is provided a detachable lid 20. The lid 20 is shaped with similar waves as the primary front plate 1, 2 so as to be horizontally slidable on the primary front plate, and is held in place by any suitable and well known means such as, for instance, bracket 21 and spring-clip 22. The extension plate 18 is obviously slidable in the same way at the screening plate 15. However, this plate 18 could be replaced by an extension of plate 15. The parts 18 to 20 consequently form a cover at the ends of the radiator at the same time as there is provided a vertical passage for the air which is open at its lower end and its upper end.

The baseboard radiator described is intended for mounting at the lowermost part ofthe wall of a room adjacent the floor and to have a relatively small height but a large length. Rising air flows closely against the undulating front plate, particularly owing to the flattened crests, and eflicient heat transfer is obtained at these points through convection but also through radiation outwards to the interior of the room. The secondary plate 9 is efficiently heated from the rear plate 3 and gives otf radiation heat to the screening plate 14, which is also heated. The parts forming the vertical passages for the air, i.e. the rear plate 3, the secondary plate 9 and the screening plate 14, are thus all heated and provide efiicient heating of the air in the said passages, which passages have an action on the draught similar to that of funnels. The shape of the screening plate parts 15 and 16 further contribute to improving the air flow. The end closures formed by the partslS to 20 also serve the same purpose. The secondary plate 9 and the screening plate 14 are-obviously heated to a somewhat different extent and it is therefore of importance that the supporting members 10 to 13 arranged between the lastmentioned plates are constructed so as to enable the members 10 and the brackets 11 to 13 to slide horizontally relative to each other.

What is claimed is: v

A baseboard radiator comprising a front plate having horizontal wave crests and troughs extending longitudinally along the entire length thereof, a flat rear plate overlying and secured to said front plate throughout the entire length thereof whereby channels are formed for' the passage of a heating medium, an undulating secondary plate having vertically extending wave crests and troughs overlying and secured to said rear plate throughout the entire length thereof whereby channels are formed for the passage of air, anda substantially flat screening plate disposed behind said secondary plate and secured thereto, thereby forming a rear wall for said air channels.

References Cited in the file of this patent UNITED STATES PATENTS Ruff Sept. 20, 1932 Erskine May 9, 1933 Tolan Mar. 21, 1950 Haugen Aug. 1, 1950 Turner Feb. 26, 1952 Adlofi July 24, 1956 

